version 2
Source: IERS Bulletin A (2000_2000_2)

Orbits: to be used with the IGS Prediction Service Orbits (IGP)

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt
             (10**-6")       (0.1 usec)    (10**-6")    (0.1 usec)  
51593.50   68752  368281  3131623   9907  2148  2115    1876       0   0  0  0
51594.50   69252  368159  3121138  11062  4650  4650    4024       0   0  0  0
51595.50   69714  367977  3109855  11505  5407  5407    5946       0   0  0  0